A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5910-00-945-2043
NSN 6240-01-322-7465
NSN 5975-00-753-7669
NSN 5999-01-221-3599
NSN 5835-00-148-9719
NSN 5855-01-068-3683
NSN 7035-00-616-4410
NSN 5855-00-327-2112
NSN 5950-01-050-7742
NSN 6105-01-370-5226
NSN 5960-01-632-6576
NSN 6650-01-624-0818